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authorLinus Torvalds <torvalds@linux-foundation.org>2012-12-12 11:51:39 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-12 11:51:39 -0800
commitd01e4afdbb65e030fd6f1f96c30a558e2eb0f279 (patch)
tree02ef82b2740cf93a98199eded5ef765fa6e03052 /arch/arm/plat-omap
parent8287361abca36504da813638310d2547469283eb (diff)
parent794b175fc0c0c4844dbb7b137a73bbfd01f6c608 (diff)
Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC cleanups on various subarchitectures from Olof Johansson: "Cleanup patches for various ARM platforms and some of their associated drivers. There's also a branch in here that enables Freescale i.MX to be part of the multiplatform support -- the first "big" SoC that is moved over (more multiplatform work comes in a separate branch later during the merge window)." Conflicts fixed as per Olof, including a silent semantic one in arch/arm/mach-omap2/board-generic.c (omap_prcm_restart() was renamed to omap3xxx_restart(), and a new user of the old name was added). * tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (189 commits) ARM: omap: fix typo on timer cleanup ARM: EXYNOS: Remove unused regs-mem.h file ARM: EXYNOS: Remove unused non-dt support for dwmci controller ARM: Kirkwood: Use hw_pci.ops instead of hw_pci.scan ARM: OMAP3: cm-t3517: use GPTIMER for system clock ARM: OMAP2+: timer: remove CONFIG_OMAP_32K_TIMER ARM: SAMSUNG: use devm_ functions for ADC driver ARM: EXYNOS: no duplicate mask/unmask in eint0_15 ARM: S3C24XX: SPI clock channel setup is fixed for S3C2443 ARM: EXYNOS: Remove i2c0 resource information and setting of device names ARM: Kirkwood: checkpatch cleanups ARM: Kirkwood: Fix sparse warnings. ARM: Kirkwood: Remove unused includes ARM: kirkwood: cleanup lsxl board includes ARM: integrator: use BUG_ON where possible ARM: integrator: push down SC dependencies ARM: integrator: delete static UART1 mapping ARM: integrator: delete SC mapping on the CP ARM: integrator: remove static CP syscon mapping ARM: integrator: remove static AP syscon mapping ...
Diffstat (limited to 'arch/arm/plat-omap')
-rw-r--r--arch/arm/plat-omap/Kconfig6
-rw-r--r--arch/arm/plat-omap/debug-leds.c2
-rw-r--r--arch/arm/plat-omap/dmtimer.c218
-rw-r--r--arch/arm/plat-omap/include/plat/dmtimer.h143
-rw-r--r--arch/arm/plat-omap/include/plat/prcm.h37
5 files changed, 241 insertions, 165 deletions
diff --git a/arch/arm/plat-omap/Kconfig b/arch/arm/plat-omap/Kconfig
index 82fcb206b5b..665870dce3c 100644
--- a/arch/arm/plat-omap/Kconfig
+++ b/arch/arm/plat-omap/Kconfig
@@ -154,6 +154,12 @@ config OMAP_32K_TIMER
intra-tick resolution than OMAP_MPU_TIMER. The 32KHz timer is
currently only available for OMAP16XX, 24XX, 34XX and OMAP4/5.
+ On OMAP2PLUS this value is only used for CONFIG_HZ and
+ CLOCK_TICK_RATE compile time calculation.
+ The actual timer selection is done in the board file
+ through the (DT_)MACHINE_START structure.
+
+
config OMAP3_L2_AUX_SECURE_SAVE_RESTORE
bool "OMAP3 HS/EMU save and restore for L2 AUX control register"
depends on ARCH_OMAP3 && PM
diff --git a/arch/arm/plat-omap/debug-leds.c b/arch/arm/plat-omap/debug-leds.c
index c43ea21f33b..aa7ebc6bcd6 100644
--- a/arch/arm/plat-omap/debug-leds.c
+++ b/arch/arm/plat-omap/debug-leds.c
@@ -111,7 +111,7 @@ static int fpga_probe(struct platform_device *pdev)
if (!iomem)
return -ENODEV;
- fpga = ioremap(iomem->start, H2P2_DBG_FPGA_SIZE);
+ fpga = ioremap(iomem->start, resource_size(iomem));
__raw_writew(0xff, &fpga->leds);
for (i = 0; i < ARRAY_SIZE(dbg_leds); i++) {
diff --git a/arch/arm/plat-omap/dmtimer.c b/arch/arm/plat-omap/dmtimer.c
index 82231a75abd..89585c29355 100644
--- a/arch/arm/plat-omap/dmtimer.c
+++ b/arch/arm/plat-omap/dmtimer.c
@@ -35,11 +35,16 @@
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
+#include <linux/clk.h>
#include <linux/module.h>
#include <linux/io.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/pm_runtime.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/platform_data/dmtimer-omap.h>
#include <plat/dmtimer.h>
@@ -81,10 +86,6 @@ static void omap_dm_timer_write_reg(struct omap_dm_timer *timer, u32 reg,
static void omap_timer_restore_context(struct omap_dm_timer *timer)
{
- if (timer->revision == 1)
- __raw_writel(timer->context.tistat, timer->sys_stat);
-
- __raw_writel(timer->context.tisr, timer->irq_stat);
omap_dm_timer_write_reg(timer, OMAP_TIMER_WAKEUP_EN_REG,
timer->context.twer);
omap_dm_timer_write_reg(timer, OMAP_TIMER_COUNTER_REG,
@@ -100,39 +101,38 @@ static void omap_timer_restore_context(struct omap_dm_timer *timer)
timer->context.tclr);
}
-static void omap_dm_timer_wait_for_reset(struct omap_dm_timer *timer)
+static int omap_dm_timer_reset(struct omap_dm_timer *timer)
{
- int c;
+ u32 l, timeout = 100000;
- if (!timer->sys_stat)
- return;
+ if (timer->revision != 1)
+ return -EINVAL;
- c = 0;
- while (!(__raw_readl(timer->sys_stat) & 1)) {
- c++;
- if (c > 100000) {
- printk(KERN_ERR "Timer failed to reset\n");
- return;
- }
- }
-}
+ omap_dm_timer_write_reg(timer, OMAP_TIMER_IF_CTRL_REG, 0x06);
-static void omap_dm_timer_reset(struct omap_dm_timer *timer)
-{
- omap_dm_timer_enable(timer);
- if (timer->pdev->id != 1) {
- omap_dm_timer_write_reg(timer, OMAP_TIMER_IF_CTRL_REG, 0x06);
- omap_dm_timer_wait_for_reset(timer);
+ do {
+ l = __omap_dm_timer_read(timer,
+ OMAP_TIMER_V1_SYS_STAT_OFFSET, 0);
+ } while (!l && timeout--);
+
+ if (!timeout) {
+ dev_err(&timer->pdev->dev, "Timer failed to reset\n");
+ return -ETIMEDOUT;
}
- __omap_dm_timer_reset(timer, 0, 0);
- omap_dm_timer_disable(timer);
- timer->posted = 1;
+ /* Configure timer for smart-idle mode */
+ l = __omap_dm_timer_read(timer, OMAP_TIMER_OCP_CFG_OFFSET, 0);
+ l |= 0x2 << 0x3;
+ __omap_dm_timer_write(timer, OMAP_TIMER_OCP_CFG_OFFSET, l, 0);
+
+ timer->posted = 0;
+
+ return 0;
}
-int omap_dm_timer_prepare(struct omap_dm_timer *timer)
+static int omap_dm_timer_prepare(struct omap_dm_timer *timer)
{
- int ret;
+ int rc;
/*
* FIXME: OMAP1 devices do not use the clock framework for dmtimers so
@@ -147,13 +147,20 @@ int omap_dm_timer_prepare(struct omap_dm_timer *timer)
}
}
- if (timer->capability & OMAP_TIMER_NEEDS_RESET)
- omap_dm_timer_reset(timer);
+ omap_dm_timer_enable(timer);
+
+ if (timer->capability & OMAP_TIMER_NEEDS_RESET) {
+ rc = omap_dm_timer_reset(timer);
+ if (rc) {
+ omap_dm_timer_disable(timer);
+ return rc;
+ }
+ }
- ret = omap_dm_timer_set_source(timer, OMAP_TIMER_SRC_32_KHZ);
+ __omap_dm_timer_enable_posted(timer);
+ omap_dm_timer_disable(timer);
- timer->posted = 1;
- return ret;
+ return omap_dm_timer_set_source(timer, OMAP_TIMER_SRC_32_KHZ);
}
static inline u32 omap_dm_timer_reserved_systimer(int id)
@@ -209,6 +216,13 @@ struct omap_dm_timer *omap_dm_timer_request_specific(int id)
unsigned long flags;
int ret = 0;
+ /* Requesting timer by ID is not supported when device tree is used */
+ if (of_have_populated_dt()) {
+ pr_warn("%s: Please use omap_dm_timer_request_by_cap()\n",
+ __func__);
+ return NULL;
+ }
+
spin_lock_irqsave(&dm_timer_lock, flags);
list_for_each_entry(t, &omap_timer_list, node) {
if (t->pdev->id == id && !t->reserved) {
@@ -234,6 +248,58 @@ struct omap_dm_timer *omap_dm_timer_request_specific(int id)
}
EXPORT_SYMBOL_GPL(omap_dm_timer_request_specific);
+/**
+ * omap_dm_timer_request_by_cap - Request a timer by capability
+ * @cap: Bit mask of capabilities to match
+ *
+ * Find a timer based upon capabilities bit mask. Callers of this function
+ * should use the definitions found in the plat/dmtimer.h file under the
+ * comment "timer capabilities used in hwmod database". Returns pointer to
+ * timer handle on success and a NULL pointer on failure.
+ */
+struct omap_dm_timer *omap_dm_timer_request_by_cap(u32 cap)
+{
+ struct omap_dm_timer *timer = NULL, *t;
+ unsigned long flags;
+
+ if (!cap)
+ return NULL;
+
+ spin_lock_irqsave(&dm_timer_lock, flags);
+ list_for_each_entry(t, &omap_timer_list, node) {
+ if ((!t->reserved) && ((t->capability & cap) == cap)) {
+ /*
+ * If timer is not NULL, we have already found one timer
+ * but it was not an exact match because it had more
+ * capabilites that what was required. Therefore,
+ * unreserve the last timer found and see if this one
+ * is a better match.
+ */
+ if (timer)
+ timer->reserved = 0;
+
+ timer = t;
+ timer->reserved = 1;
+
+ /* Exit loop early if we find an exact match */
+ if (t->capability == cap)
+ break;
+ }
+ }
+ spin_unlock_irqrestore(&dm_timer_lock, flags);
+
+ if (timer && omap_dm_timer_prepare(timer)) {
+ timer->reserved = 0;
+ timer = NULL;
+ }
+
+ if (!timer)
+ pr_debug("%s: timer request failed!\n", __func__);
+
+ return timer;
+}
+EXPORT_SYMBOL_GPL(omap_dm_timer_request_by_cap);
+
int omap_dm_timer_free(struct omap_dm_timer *timer)
{
if (unlikely(!timer))
@@ -388,7 +454,6 @@ int omap_dm_timer_stop(struct omap_dm_timer *timer)
*/
timer->context.tclr =
omap_dm_timer_read_reg(timer, OMAP_TIMER_CTRL_REG);
- timer->context.tisr = __raw_readl(timer->irq_stat);
omap_dm_timer_disable(timer);
return 0;
}
@@ -398,7 +463,7 @@ int omap_dm_timer_set_source(struct omap_dm_timer *timer, int source)
{
int ret;
char *parent_name = NULL;
- struct clk *fclk, *parent;
+ struct clk *parent;
struct dmtimer_platform_data *pdata;
if (unlikely(!timer))
@@ -414,14 +479,11 @@ int omap_dm_timer_set_source(struct omap_dm_timer *timer, int source)
* use the clock framework to set the parent clock. To be removed
* once OMAP1 migrated to using clock framework for dmtimers
*/
- if (pdata->set_timer_src)
+ if (pdata && pdata->set_timer_src)
return pdata->set_timer_src(timer->pdev, source);
- fclk = clk_get(&timer->pdev->dev, "fck");
- if (IS_ERR_OR_NULL(fclk)) {
- pr_err("%s: fck not found\n", __func__);
+ if (!timer->fclk)
return -EINVAL;
- }
switch (source) {
case OMAP_TIMER_SRC_SYS_CLK:
@@ -440,18 +502,15 @@ int omap_dm_timer_set_source(struct omap_dm_timer *timer, int source)
parent = clk_get(&timer->pdev->dev, parent_name);
if (IS_ERR_OR_NULL(parent)) {
pr_err("%s: %s not found\n", __func__, parent_name);
- ret = -EINVAL;
- goto out;
+ return -EINVAL;
}
- ret = clk_set_parent(fclk, parent);
+ ret = clk_set_parent(timer->fclk, parent);
if (IS_ERR_VALUE(ret))
pr_err("%s: failed to set %s as parent\n", __func__,
parent_name);
clk_put(parent);
-out:
- clk_put(fclk);
return ret;
}
@@ -534,8 +593,8 @@ int omap_dm_timer_set_match(struct omap_dm_timer *timer, int enable,
l |= OMAP_TIMER_CTRL_CE;
else
l &= ~OMAP_TIMER_CTRL_CE;
- omap_dm_timer_write_reg(timer, OMAP_TIMER_CTRL_REG, l);
omap_dm_timer_write_reg(timer, OMAP_TIMER_MATCH_REG, match);
+ omap_dm_timer_write_reg(timer, OMAP_TIMER_CTRL_REG, l);
/* Save the context */
timer->context.tclr = l;
@@ -611,6 +670,37 @@ int omap_dm_timer_set_int_enable(struct omap_dm_timer *timer,
}
EXPORT_SYMBOL_GPL(omap_dm_timer_set_int_enable);
+/**
+ * omap_dm_timer_set_int_disable - disable timer interrupts
+ * @timer: pointer to timer handle
+ * @mask: bit mask of interrupts to be disabled
+ *
+ * Disables the specified timer interrupts for a timer.
+ */
+int omap_dm_timer_set_int_disable(struct omap_dm_timer *timer, u32 mask)
+{
+ u32 l = mask;
+
+ if (unlikely(!timer))
+ return -EINVAL;
+
+ omap_dm_timer_enable(timer);
+
+ if (timer->revision == 1)
+ l = __raw_readl(timer->irq_ena) & ~mask;
+
+ __raw_writel(l, timer->irq_dis);
+ l = omap_dm_timer_read_reg(timer, OMAP_TIMER_WAKEUP_EN_REG) & ~mask;
+ omap_dm_timer_write_reg(timer, OMAP_TIMER_WAKEUP_EN_REG, l);
+
+ /* Save the context */
+ timer->context.tier &= ~mask;
+ timer->context.twer &= ~mask;
+ omap_dm_timer_disable(timer);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(omap_dm_timer_set_int_disable);
+
unsigned int omap_dm_timer_read_status(struct omap_dm_timer *timer)
{
unsigned int l;
@@ -632,8 +722,7 @@ int omap_dm_timer_write_status(struct omap_dm_timer *timer, unsigned int value)
return -EINVAL;
__omap_dm_timer_write_status(timer, value);
- /* Save the context */
- timer->context.tisr = value;
+
return 0;
}
EXPORT_SYMBOL_GPL(omap_dm_timer_write_status);
@@ -696,7 +785,7 @@ static int __devinit omap_dm_timer_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct dmtimer_platform_data *pdata = pdev->dev.platform_data;
- if (!pdata) {
+ if (!pdata && !dev->of_node) {
dev_err(dev, "%s: no platform data.\n", __func__);
return -ENODEV;
}
@@ -725,12 +814,25 @@ static int __devinit omap_dm_timer_probe(struct platform_device *pdev)
return -ENOMEM;
}
- timer->id = pdev->id;
+ if (dev->of_node) {
+ if (of_find_property(dev->of_node, "ti,timer-alwon", NULL))
+ timer->capability |= OMAP_TIMER_ALWON;
+ if (of_find_property(dev->of_node, "ti,timer-dsp", NULL))
+ timer->capability |= OMAP_TIMER_HAS_DSP_IRQ;
+ if (of_find_property(dev->of_node, "ti,timer-pwm", NULL))
+ timer->capability |= OMAP_TIMER_HAS_PWM;
+ if (of_find_property(dev->of_node, "ti,timer-secure", NULL))
+ timer->capability |= OMAP_TIMER_SECURE;
+ } else {
+ timer->id = pdev->id;
+ timer->errata = pdata->timer_errata;
+ timer->capability = pdata->timer_capability;
+ timer->reserved = omap_dm_timer_reserved_systimer(timer->id);
+ timer->get_context_loss_count = pdata->get_context_loss_count;
+ }
+
timer->irq = irq->start;
- timer->reserved = omap_dm_timer_reserved_systimer(timer->id);
timer->pdev = pdev;
- timer->capability = pdata->timer_capability;
- timer->get_context_loss_count = pdata->get_context_loss_count;
/* Skip pm_runtime_enable for OMAP1 */
if (!(timer->capability & OMAP_TIMER_NEEDS_RESET)) {
@@ -770,7 +872,8 @@ static int __devexit omap_dm_timer_remove(struct platform_device *pdev)
spin_lock_irqsave(&dm_timer_lock, flags);
list_for_each_entry(timer, &omap_timer_list, node)
- if (timer->pdev->id == pdev->id) {
+ if (!strcmp(dev_name(&timer->pdev->dev),
+ dev_name(&pdev->dev))) {
list_del(&timer->node);
ret = 0;
break;
@@ -780,11 +883,18 @@ static int __devexit omap_dm_timer_remove(struct platform_device *pdev)
return ret;
}
+static const struct of_device_id omap_timer_match[] = {
+ { .compatible = "ti,omap2-timer", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, omap_timer_match);
+
static struct platform_driver omap_dm_timer_driver = {
.probe = omap_dm_timer_probe,
.remove = __devexit_p(omap_dm_timer_remove),
.driver = {
.name = "omap_timer",
+ .of_match_table = of_match_ptr(omap_timer_match),
},
};
diff --git a/arch/arm/plat-omap/include/plat/dmtimer.h b/arch/arm/plat-omap/include/plat/dmtimer.h
index 3f5b9cfd9c0..a3fbc48c332 100644
--- a/arch/arm/plat-omap/include/plat/dmtimer.h
+++ b/arch/arm/plat-omap/include/plat/dmtimer.h
@@ -32,7 +32,6 @@
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/platform_device.h>
@@ -55,6 +54,10 @@
#define OMAP_TIMER_TRIGGER_OVERFLOW 0x01
#define OMAP_TIMER_TRIGGER_OVERFLOW_AND_COMPARE 0x02
+/* posted mode types */
+#define OMAP_TIMER_NONPOSTED 0x00
+#define OMAP_TIMER_POSTED 0x01
+
/* timer capabilities used in hwmod database */
#define OMAP_TIMER_SECURE 0x80000000
#define OMAP_TIMER_ALWON 0x40000000
@@ -62,16 +65,22 @@
#define OMAP_TIMER_NEEDS_RESET 0x10000000
#define OMAP_TIMER_HAS_DSP_IRQ 0x08000000
+/*
+ * timer errata flags
+ *
+ * Errata i103/i767 impacts all OMAP3/4/5 devices including AM33xx. This
+ * errata prevents us from using posted mode on these devices, unless the
+ * timer counter register is never read. For more details please refer to
+ * the OMAP3/4/5 errata documents.
+ */
+#define OMAP_TIMER_ERRATA_I103_I767 0x80000000
+
struct omap_timer_capability_dev_attr {
u32 timer_capability;
};
-struct omap_dm_timer;
-
struct timer_regs {
u32 tidr;
- u32 tistat;
- u32 tisr;
u32 tier;
u32 twer;
u32 tclr;
@@ -90,16 +99,35 @@ struct timer_regs {
u32 towr;
};
-struct dmtimer_platform_data {
- /* set_timer_src - Only used for OMAP1 devices */
- int (*set_timer_src)(struct platform_device *pdev, int source);
- u32 timer_capability;
+struct omap_dm_timer {
+ int id;
+ int irq;
+ struct clk *fclk;
+
+ void __iomem *io_base;
+ void __iomem *irq_stat; /* TISR/IRQSTATUS interrupt status */
+ void __iomem *irq_ena; /* irq enable */
+ void __iomem *irq_dis; /* irq disable, only on v2 ip */
+ void __iomem *pend; /* write pending */
+ void __iomem *func_base; /* function register base */
+
+ unsigned long rate;
+ unsigned reserved:1;
+ unsigned posted:1;
+ struct timer_regs context;
int (*get_context_loss_count)(struct device *);
+ int ctx_loss_count;
+ int revision;
+ u32 capability;
+ u32 errata;
+ struct platform_device *pdev;
+ struct list_head node;
};
int omap_dm_timer_reserve_systimer(int id);
struct omap_dm_timer *omap_dm_timer_request(void);
struct omap_dm_timer *omap_dm_timer_request_specific(int timer_id);
+struct omap_dm_timer *omap_dm_timer_request_by_cap(u32 cap);
int omap_dm_timer_free(struct omap_dm_timer *timer);
void omap_dm_timer_enable(struct omap_dm_timer *timer);
void omap_dm_timer_disable(struct omap_dm_timer *timer);
@@ -121,6 +149,7 @@ int omap_dm_timer_set_pwm(struct omap_dm_timer *timer, int def_on, int toggle, i
int omap_dm_timer_set_prescaler(struct omap_dm_timer *timer, int prescaler);
int omap_dm_timer_set_int_enable(struct omap_dm_timer *timer, unsigned int value);
+int omap_dm_timer_set_int_disable(struct omap_dm_timer *timer, u32 mask);
unsigned int omap_dm_timer_read_status(struct omap_dm_timer *timer);
int omap_dm_timer_write_status(struct omap_dm_timer *timer, unsigned int value);
@@ -246,34 +275,6 @@ int omap_dm_timers_active(void);
#define OMAP_TIMER_TICK_INT_MASK_COUNT_REG \
(_OMAP_TIMER_TICK_INT_MASK_COUNT_OFFSET | (WP_TOWR << WPSHIFT))
-struct omap_dm_timer {
- unsigned long phys_base;
- int id;
- int irq;
- struct clk *fclk;
-
- void __iomem *io_base;
- void __iomem *sys_stat; /* TISTAT timer status */
- void __iomem *irq_stat; /* TISR/IRQSTATUS interrupt status */
- void __iomem *irq_ena; /* irq enable */
- void __iomem *irq_dis; /* irq disable, only on v2 ip */
- void __iomem *pend; /* write pending */
- void __iomem *func_base; /* function register base */
-
- unsigned long rate;
- unsigned reserved:1;
- unsigned posted:1;
- struct timer_regs context;
- int (*get_context_loss_count)(struct device *);
- int ctx_loss_count;
- int revision;
- u32 capability;
- struct platform_device *pdev;
- struct list_head node;
-};
-
-int omap_dm_timer_prepare(struct omap_dm_timer *timer);
-
static inline u32 __omap_dm_timer_read(struct omap_dm_timer *timer, u32 reg,
int posted)
{
@@ -302,16 +303,13 @@ static inline void __omap_dm_timer_init_regs(struct omap_dm_timer *timer)
tidr = __raw_readl(timer->io_base);
if (!(tidr >> 16)) {
timer->revision = 1;
- timer->sys_stat = timer->io_base +
- OMAP_TIMER_V1_SYS_STAT_OFFSET;
timer->irq_stat = timer->io_base + OMAP_TIMER_V1_STAT_OFFSET;
timer->irq_ena = timer->io_base + OMAP_TIMER_V1_INT_EN_OFFSET;
- timer->irq_dis = NULL;
+ timer->irq_dis = timer->io_base + OMAP_TIMER_V1_INT_EN_OFFSET;
timer->pend = timer->io_base + _OMAP_TIMER_WRITE_PEND_OFFSET;
timer->func_base = timer->io_base;
} else {
timer->revision = 2;
- timer->sys_stat = NULL;
timer->irq_stat = timer->io_base + OMAP_TIMER_V2_IRQSTATUS;
timer->irq_ena = timer->io_base + OMAP_TIMER_V2_IRQENABLE_SET;
timer->irq_dis = timer->io_base + OMAP_TIMER_V2_IRQENABLE_CLR;
@@ -322,45 +320,44 @@ static inline void __omap_dm_timer_init_regs(struct omap_dm_timer *timer)
}
}
-/* Assumes the source clock has been set by caller */
-static inline void __omap_dm_timer_reset(struct omap_dm_timer *timer,
- int autoidle, int wakeup)
+/*
+ * __omap_dm_timer_enable_posted - enables write posted mode
+ * @timer: pointer to timer instance handle
+ *
+ * Enables the write posted mode for the timer. When posted mode is enabled
+ * writes to certain timer registers are immediately acknowledged by the
+ * internal bus and hence prevents stalling the CPU waiting for the write to
+ * complete. Enabling this feature can improve performance for writing to the
+ * timer registers.
+ */
+static inline void __omap_dm_timer_enable_posted(struct omap_dm_timer *timer)
{
- u32 l;
+ if (timer->posted)
+ return;
- l = __raw_readl(timer->io_base + OMAP_TIMER_OCP_CFG_OFFSET);
- l |= 0x02 << 3; /* Set to smart-idle mode */
- l |= 0x2 << 8; /* Set clock activity to perserve f-clock on idle */
+ if (timer->errata & OMAP_TIMER_ERRATA_I103_I767)
+ return;
- if (autoidle)
- l |= 0x1 << 0;
-
- if (wakeup)
- l |= 1 << 2;
-
- __raw_writel(l, timer->io_base + OMAP_TIMER_OCP_CFG_OFFSET);
-
- /* Match hardware reset default of posted mode */
__omap_dm_timer_write(timer, OMAP_TIMER_IF_CTRL_REG,
- OMAP_TIMER_CTRL_POSTED, 0);
+ OMAP_TIMER_CTRL_POSTED, 0);
+ timer->context.tsicr = OMAP_TIMER_CTRL_POSTED;
+ timer->posted = OMAP_TIMER_POSTED;
}
-static inline int __omap_dm_timer_set_source(struct clk *timer_fck,
- struct clk *parent)
+/**
+ * __omap_dm_timer_override_errata - override errata flags for a timer
+ * @timer: pointer to timer handle
+ * @errata: errata flags to be ignored
+ *
+ * For a given timer, override a timer errata by clearing the flags
+ * specified by the errata argument. A specific erratum should only be
+ * overridden for a timer if the timer is used in such a way the erratum
+ * has no impact.
+ */
+static inline void __omap_dm_timer_override_errata(struct omap_dm_timer *timer,
+ u32 errata)
{
- int ret;
-
- clk_disable(timer_fck);
- ret = clk_set_parent(timer_fck, parent);
- clk_enable(timer_fck);
-
- /*
- * When the functional clock disappears, too quick writes seem
- * to cause an abort. XXX Is this still necessary?
- */
- __delay(300000);
-
- return ret;
+ timer->errata &= ~errata;
}
static inline void __omap_dm_timer_stop(struct omap_dm_timer *timer,
diff --git a/arch/arm/plat-omap/include/plat/prcm.h b/arch/arm/plat-omap/include/plat/prcm.h
deleted file mode 100644
index 267f43bb2a4..00000000000
--- a/arch/arm/plat-omap/include/plat/prcm.h
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * arch/arm/plat-omap/include/mach/prcm.h
- *
- * Access definations for use in OMAP24XX clock and power management
- *
- * Copyright (C) 2005 Texas Instruments, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * XXX This file is deprecated. The PRCM is an OMAP2+-only subsystem,
- * so this file doesn't belong in plat-omap/include/plat. Please
- * do not add anything new to this file.
- */
-
-#ifndef __ASM_ARM_ARCH_OMAP_PRCM_H
-#define __ASM_ARM_ARCH_OMAP_PRCM_H
-
-u32 omap_prcm_get_reset_sources(void);
-int omap2_cm_wait_idlest(void __iomem *reg, u32 mask, u8 idlest,
- const char *name);
-
-#endif
-
-
-